Perlight Solar PLM-OM Series Installation Manual
9
www.perlight.com
V.01.2022 A1.0
Tilt angle selection
The tilt angle of the Modules is measured between the surface of the modules and a
horizontal ground surface, the modules generate maximum power output when it faces the
sun directly, as shown in figure 2.
Modules in series with the same array must be oriented in the same direction and angle.
Different installation directions and angles will cause the modules to absorb the total solar
radiation difference, causing the loss of output power, thus reducing the operating efficiency
of the system.
The maximum power is generated when the sun is directed to the module, selecting the best
installation angle should consider the sun path during the winter.
External or otherwise artificially concentrated sunlight shall not be directed onto the front or
back face of the PV module.
5. Identification
Each PV module is affixed with two kinds of labels, providing the following information:
1. Label: Describes the product name, PV module model, nominal power, rated voltage, rated
current, open circuit voltage, short circuit current, maximum system voltage, PV module
size and weight under standard test conditions.
2. Serial number: Each module has a unique bar code number, each bar code number has 20
letters and numbers. The bar code is permanently encapsulated inside the module, as can
be seen clearly from the top right corner of the module. The bar code number allows you
to trace information about the module production process.
Fig.2: Installation angle
Degrees of
Latitude
Tilt Angle
0⁰ ~ 15⁰
15⁰
15⁰ ~ 25⁰
Equal to Latitude
25⁰ ~ 30⁰
La 5⁰
30⁰ ~ 35⁰
La 10⁰
35⁰ ~ 40⁰
La 15⁰
40⁰ +
La 20⁰
